package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartyFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartyFeignService thirdPartyFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
   public R sendCode(@RequestParam("phone") String phone){
        //1.接口防刷
        //2.验证码的再次校验
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if(StringUtils.isNotEmpty(redisCode)){
            Long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l < 60000){
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }

        String code = UUID.randomUUID().toString().substring(0, 5);
        String substr = code+"_"+System.currentTimeMillis();

        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,substr,10, TimeUnit.MINUTES);

        thirdPartyFeignService.sendCode(phone,code);
        return R.ok();
   }

   @PostMapping("/regist")
   public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes,HttpSession session){
        if(result.hasErrors()){
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors",errors);
//            model.addAttribute("errors",errors);
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //真正注册，调用远程服务进行注册
        String code = vo.getCode();
       String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
       if(StringUtils.isNotEmpty(s)){
            if(code.equals(s.split("_")[0])){
                //删除验证码，令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
                //验证码通过，调用远程会员服务注册
                R r = memberFeignService.regist(vo);
                if(r.getCode() == 0){
                    session.setAttribute(AuthServerConstant.GULIMALL_LOGIN_USER,r.getData("data",new TypeReference<MemberRespVo>(){}));
                    //注册成功回到登录页
                    return "redirect:http://auth.gulimall.com/login.html";
                }else{

                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", (String) r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            }
       }else {
           Map<String, String> errors = new HashMap<>();
           errors.put("code","验证码错误");
           redirectAttributes.addFlashAttribute("errors",errors);
           return "redirect:http://auth.gulimall.com/reg.html";
       }
        //注册成功回到登录页
       return "redirect:http://auth.gulimall.com/login.html";
   }

    @GetMapping({"/login.html", ""})
    public String loginPage(HttpSession session) {
        Object attribute = session.getAttribute(AuthServerConstant.GULIMALL_LOGIN_USER);
        if (attribute == null) {
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }
    }

   @PostMapping("/login")
   public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){
       R r = memberFeignService.login(vo);
       if(r.getCode() == 0){
           session.setAttribute(AuthServerConstant.GULIMALL_LOGIN_USER,r.getData("data",new TypeReference<MemberRespVo>(){}));
           return "redirect:http://gulimall.com";
       }else{
           Map<String, String> errors = new HashMap<>();
           errors.put("msg", (String) r.getData("msg",new TypeReference<String>(){}));
           redirectAttributes.addFlashAttribute("errors",errors);
           return "redirect:http://auth.gulimall.com/login.html";
       }
   }
}
